Granted Patent
Utility
US 4,806,535 · App. 07/076,461
Imidazolylphenyl and 1,2,4-triazolylphenyl benzopyridazinone and pyridopyridazinone compounds and their use for increasing cardiatonic contractility
Inventors:
William C. Faith, Henry F. Campbell, Donald E. Kuhla, William L. Studt, James L. Barnes
Patented Case
View Patent ↗
Granted: Feb 21, 1989
Filed: Jul 22, 1987
Inventors
William C. Faith
Henry F. Campbell
Donald E. Kuhla
William L. Studt
James L. Barnes
Assignee (at issue)
Rorer Pharmaceutical Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.